Attachment for narrow ware looms



Jan. 12, 1932. P w. OEHRLE 1,840,818

ATTACHMENT FOR NARROW WARE LOOMS Filed March 29, 1928 v3 Sheets-Sheet l Jan. 12, 1932. F w. OEHRLE 1,840,818

ATTACHMENT FOR NARROW WARE LOOMS Filed March 29, 1928 I 3 Sheets-Sheet 2 Jan. 12, 1932. F. w. OEHRLE ATTACHMENT FOR NARROW WARE LQOMS :s She'ts-Sheet 3 Filed March 29, 1928 Patented Jan. 12, 1932 Unrrsn STATES TEN OFFICE FRANKLIN w. OEI-IRLE, or PHILADELPHIA,PENNSYLVANIA; lissreivon '10 OEHRLE BROTHERS COMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION or PENNSYLVANIA ATTACHMENT FOE minnow WARE Looivrs Application filed March 29, 1928. Serial No. 265,578.

warp threads which enter into the construction of the fabric. A couple of needles are employed and are inserted alternately betwcn these elevated warp threads and the main body of'the warp threads so that in the further operation of the Jacquard gearing in known manner these threads are supported by the needles and while the needles respectively still remain in position underneath the loops of threads formed thereover weft threads or picks are inserted between the warp threads and are driven home, as it were, by the action of the reed thereon in known manner. The operation above referred to-is well known in this art and consequently has not been illustrated in the drawings.

The invention relates to the mechanism employed for actuating and operating the needles so as to place them alternately in proper relation to the warp threads which are employed in the formation of the narrow fabric. l i

The general object of the invention is to provide novel mechanism for operating and actuating the needles in the manner as above indicated, which mechanism shall be positive and efficient in its. operation.

It also is an object of the invention to providemeans interposed between the main' driving shaft and theneedle supports for actuating the said supports and the needles carried thereby and for controlling the movements and the positions thereof. 7 v

I shall not now point out the further. ob-' jects which are incident to the invention but other objects thereof will be pointed out in the detailed description which follows or will be apparentfrom such description.

Y In order that the invention maybe readily understood and its practical character fully appreciated reference should be had to the accompanying. drawings in which I have illustrated the mechanical embodiment thereof which is that at present preferred by me.

In the drawings;

' Fig. 1 is a new 1n sectional top plan of one end portion of anarrow ware loom structure provided with the invention, the said view i being taken on the line 11'of Fig. 2;

Fig. 2 is a transverse vertical sectional view taken in the plane of the line 2-2 of Fig.1;

Fig. 3 is a view in front elevation of the end portion of the loom'struoture shown in'Fig. 1, a portion of the upper part of the structure being broken away and a part shown in section in order that adetail of construction of one element of the attachment constituting my invention may be more clearly shown;

Fig. 4: is a view of the upper portion of the structure shownin Fig. 3but in'which certain parts are shown in different positions from'those in which they are shown in Fig. 3;

and I v I Fig. 5 is a vertical sectional view of afragmentary portion of the structure taken on the line 5-5 of Fig. l, the said view illustrat ing certain details of construction.

In the drawings I have shown a supporting frame, designated as'a whole by the reference numeral 1, upon which the various parts of the operative mechanism of theloom' structure are supported. For the purpose of actuating the 'various 'moving parts "of the 100m structure I have provided a main driving shaft 2 upon which are mounted crank disks only one of which is shown at 3. The

main driving shaft and the disk rotate in the direction indicated. by the'arrowv 4; 'Links 5 (only one of which is shown) are connected by pins to the disks 3 at their rearends and at their 'forward'ends are connected at 6 to a support 7 connected and supported upon the upper ends of parallel links '8. A batten'or are supported upon the batten or lay 9 and project upwardly therefrom in known man ner. Oneof these reeds is'shown at 10. The

warp threads of the respective fabrics being threads isgeffected by means of Jacquard 9 is mounted upon the support 7 Reeds gearing (not shown) which operates in the usual well known manner.

For the purpose of laying the weft threads between the angularly related sheds of the warp threads shuttles 15 are provided which are reciprocated back and forth in known manner. These shuttles may move in curved paths or in straight paths, which latter is the case in the construction illustrated. The means for actuating the shuttles is not illustrated because any known means may be employed for that purpose. The Jacquard gearing, as has been indicated already, operates to elevate certain predetermined or selected warp threads above the main group of threads of the upper shed and it is by the formation of loops in such elevated threads that a fabric is produced one surface of which is provided with pile threads or projecting loops. The presence of these pile threads or projectin loops gives to the surface of the fabric an ornamental appearance. Of coursethe fabric may be woven without such pile threads or projecting loops but the presence thereof frequently is desired.

For the purpose of forming loops in these threads needles 16 and 17 are provided which occupy horizontal positions and which are adapted tobe reciprocated into and out of operative contiguous relation, as above indicated, with respect to the warp threads of the fabric. The mechanism as thus far described is well known and constitutes no part of my invention.

'1 shal now proceed to a'description of the mechanism for effecting the operative movements of the needles 16 and 17, which mechanism as illustrated constitutes an embodiment of the invention.

The driving shaft 2 is provided near one end in contiguous relation to the disk 3 which is shown in Fig. 2 of the drawings with a bevel gear 20 which is in mesh with a bevel gear 21 mounted on the lower end of a vertical shaft 22 the upper end of which is provided with a bevel pinion 23 which engages a bevel gear 24 mounted upon the inner end of a horizontal shaft 25 which extends from front to rear of the loom structure. The innor end of the said shaft is mounted in a bearing provided in a bracket 26 supported ipon a horizontal member of the loom frame 1 as is shown in Fig. 2. At its front end the said shaft is mounted in a bearing 27 as shown in Fig. 2.

The shaft 25 is provided near its front end with two parallel disks 28 and 29 in the front faces of which are provided cam grooves 30 and 31 respectively. The first of these grooves is indicated in dotted lines in Figs. 2, 3 and 4: of the drawings while the second of said grooves is shown in full lines in Figs. 3 and 4 and in dotted lines in Fig. 2. The greater portions of these cam grooves are circular and have the same axis although they are of different diameters, as indicated in Figs. 3 and 1-. They are both also provided with jogs or deflected portions for a purpose which will be described hereinafter. The jogs of these cams are located in oppositely disposed relation to each other. The relationship between these jogs will be apparent by reference to Figs. 3 and 4 of the drawings. The jog in the cam groove 30 is shown at 35, while the jog in the cam groove 31 is shown at 36. The purpose of these cam grooves is to actuate a couple of vertical levers 37 and 38 which are pivoted intermediate their ends upon a pivot rod 10 supported by a bracket 41 mounted upon the horizontal side member of the frame shown at the upper side of 2 of the drawings. The upper ends of these levers 37 and 38 are provided with rollers 42 and 43 which are located in he cam grooves 30 and 31. The rotation of the cam disks 28 and 29 causes oscillating movements of tie levers 37 and 38 about the pivot rod 40. As a result of such oscillating the said levers 37 and 38 are pivo ta-lly connected respectively to the outer ends of links 45 and 4-6 the inner ends of which are pivotally connected respectively to projections 47 and 48 which extend upwardly from the carrier or supporting bars 49 and 50 which in turn support the bars 51 and 52 upon which the needles l6 and 17 are mounted. The bars 51 and 52 are slidably mounted in supporting guides 53 and 5 1 which are mounted respectively upon the supporting bars 49 and 50. The said guide supports 53 and 5% project inwardly from the bars 49 and 50, as shown in Fig. 1 of the drawings. The bars 51 and. 52 are retained in the guiding channels of the guides 53 and 54 by means of retaining cross plates 55 and 56. It will be apparent that by the means just described the bars 49 and 50 are caused to reciprocate and that thereby the needle supporting slidable bars 51 and 52 are caused to move laterally to effect reciprocatory movements of the needles 16 and 17. It also will be apparent that the bars 51 and 52 are moved alternately with respect to each other; that is to say, assuming that the lever 37 is actuated by the engagement of the roller 42 thereon with the jog 35 of the cam groove 30, the cam disks 28 and 29 will revolve through approximately 180 before the roller 23 upon the upper end of the lever 38 engages the jog 36 in the cam groove 31. Upon en agement of the rollers 472 and 43 with the jogs 35 and 36, respectively, of the cam grooves 30 and 31, the needles 16 and 17 are more or less quickly withdrawn from and returned into position in cooperative relation to the warp threads employed in the weaving of the fabric as above described.

' In the operation of the device the needle supports 51 and 52 not only are caused to move laterally to efi'ect reciprocating movements of the needles 16 and 17 as has'been described already, but they also are caused to move in longitudinal directions'so as to cause inward and outward movement of the needles with respect to the front of the loom structure. v a r I shall now referto that portion of the mechanism embodying my invention :for effecting longitudinal movements of the supporting bars 51 and 52.

It will be noted that the front ends of the bars 51 and 52 project beyond the front edge of a front beam of the frame structure and are adapted respectively to receive impacts or blows from the projections' 61and 62 which extend upwardly from a laterally movable bar 63 which extends from endto end of the loom structure at the front thereof. The projections 61 and 62 are located in spaced relation to each other as indicated and in operative relation to the front ends of the bars 51 and 52. For the purpose of causing inward and outward movement of the-impact bar 63 I have provided shafts 65 (only one of which is shown) located at intervals at the front portion of the loom structure. The upper ends 'ofthese shafts are provided with arms 66 the outer ends 'ofwhich are pivotally connected with the impact bar 63. For the purpose of swinging the arms 66 the shafts 65 are oscillated. For oscillating the shafts 65 I have provided an osci llatable upright shaft 70 mounted in hearings in adjoin ing'relation to a corner of the loom structure as illustrated in the drawings. The shaft 70 is provided near its upper end with an arm 71 which extends in very nearly parallel relation to the front sideof the loom structure. The outer end of the said arm is pivotally connected to the front end of a connecting rod 7 3 the-innerend of which is pro-f vided with an eccentric strap 74whichis in engagement with an eccentric disk 7 5 mounted on the driving shaft 2. The rota tion of the shaftv2 with the eccentric disk 75 thereon causes reciprocatory movements of the connecting link 7 3which movement causes oscillatory movements of the shaft 70,- Also mounted upon the said shaft is an arm 77 the. outer end ofwhich terminates in what may be-described as a T-head portion- 78 within which is provided a cam slot 7 9.1 Op;

" crating in the cam slot 79 is 'a roller 80 mounted upon a pin 81 which is supported upon an arm 82, intermediate its ends as shown. The outeror front end of the said arm is pivotally connected to the upper end of a'post 83. he inner rear end of'said arm is pivotally connected as indicated at 84 to one end of a r0cl'85' which extends parallel with andinwardly ofthe front portion of the loom structure;- The said rod is pivotally 7 connected at intervals, as indicated'at 87,

with the inner ends of arms 88 which project rearwardlyfrom the shafts 65.. The cam slot 79 is so shaped as to cause oscillatory or swinging movements of the arm 82 which in turn causes reciprocatory movements of the bar 85 which is connected to the inner rear ends of the arms 88. Reciprocatory move ments of the connecting rod 85 causes rocke ing movements of the arms 88 and the rocking shafts 65 and of the arms 66. Rocking movements of the latter cause movements of the impact bar 63 inwardly and outwardly with respect to the front of the'loom' structure.

In its inward movements one or the other of the impact projections 61 or 62 contacts with X needle carried thereby has been moved into operative relation to the warp threads of the adjoining fabric. The extent of the inward or rearward movements of the needle supportingbars 51 and 52 is limited by thecontact vofthe stop pins 90 thereon with the front edges'of thejretainer plates 55.. Movement offthe needles and their supporting bars in the opposite directiom'toward the front of the loom, is caused by'the contact of the reed therewith. i a

The cam grooves 30 and 31 and the cam slot 79 are so related to each other that during the period that a needle 16 or 17 is withdrawn from cooperative relation with respect to the warp threaes the impact bar'63 is caused to move rearwardly so as tocause the impact projection 61 or 62 to strike the outer end of the needle supporting bar 51 or52 which maybe in proper relation to an impact pro jection' 61 or 62.

. -Itmay be noted that the gear teeth upon the bevel pinions 20, 21 and 23 are to the gear.

teeth upon the bevel gear 24 as one to four;

The operation of the mechanism of my invention which is employed for actuating the needles 16 and 17. in the manner as already indicated hasbeen set forthin connection with the; description of thefcon s'truction thereof and it is not necessary, it is believed, to repeat or' to recapitulate the same here.

' It will be seen that by my invention'I have provided a simple and positively acting means-for actuating and-controlling the OP: eration of thepile or loop forming needles 16 and '17. It also will be noted'that the mounting of the attachment upon'the'loom structure does not in anyway interfere with the other usual and necessarypoints of the structure. of the loom.

It will be understood that my invention is susceptible of embodiment in other forms means interposed between said shaft and the said needle supporting bars for alternately actuating said supporting bars independently-of each other laterally, a bar having means thereon for contacting with said needle supporting bars when the latter occupy predetermined adjusted positions, and means in terposed between said driving shaft'and the said bar for causing oscillatory lateral movements of the latter toward and from the rear R of the loom.

2. An attachment for a loom to form pile projections upon a surface of a fabric, comprising bars for supporting needles in c0- operative relation to the warp threads of a narrow ware fabric which is being woven,

reciprocatable bars for supporting the said needle supporting bars, a driving shaft, means actuated by the said driving shaft for causing alternate and independent reciprocatory movements of the said reciprocatable bars to cause alternate en a ement of the needles with said warp threads, a bar having means for contacting with the said needle supporting bars to cause rearward movement thereof, and means interposed between said -driving shaft and the said last named bar for causing oscillatory movements of the latter toward and from the rear of the loom. 3. An attachment for a loom to form pile projections upon a surface of a fabric, comprising needles which are adapted to be movedvinto and out of operative relation to the warp threads of a narrow ware fabric which is being woven, means for supporting said needles independently of each other, a driving shaft, means interposed between the said driving shaft and the said needle supporting means for causlng reclprocatory and lateral movements of the said needles to r r A move them alternately into and out of operative relation to the warp threads, the said last named means including a bar having means thereon for contacting with the needle supporting bars to cause rearward movements of the latter when they occupy certain predetermined positions, and means interposed between said driving shaft and the said bar for causing oscillatory movements of the latter toward and from the rear of the loom.

4. An attachment for a loom to form pile projections upon a surface of a fabric, com-.

prising needles, separate and independent laterally and longitudinally movable supports for said needles, separate and inclependently movable means for supporting the said'needle supports, a driving shaft, means interposed between the said driving shaft and the said first named means for alternately actuating the latter in opposite directions to cause the said needles to alternately engage the warp threads of said fabric, a bar located in front of said longitudinally movable supports for said needles said bar having means adapted to contact with said needle supports when the latter occupy predetermined positions, and means inter posed between the said driving shaft and the said bar for causing oscillatory movements of the latter toward and from the rear of the loom to cause alternate rearward movements of the said longitudinally movable supports for said needles.

5. An attachment for a loom to form pile projections upon a surface of a fabric, comprising needles which are adapted to cooperate with selected warp threads em ployed in the weaving of a narrow ware fabric to form loops therein which project upon a side of said fabric, substantially parallel and independently movable bars extending in substantially parallel relation to the front side of a loom structure, bars'for supporting the said needles, one of the said bars being slidably mounted upon one of the said parallel bars and the other of said bars being mounted upon the other of said parallel bars and both of the said needle supporting bars extending in substantially right angular relation to the said parallel bars, one of said needle supporting bars being located in adjoining relation to one edge of said fabric and the other in adjoining relation to the opposite edge of said fabric means for effecting independent simultaneous longitudinal movements of the said parallel bars in the same direction, and means for causing alternate longitudinal movements of the said needle supporting bars. 7 r

6. An attachment for a loom to form pile projections upon a surface of a fabric, comprising needles which are adapted to cooperate with selected warp threads employed in the weaving of a narrow ware fabric to form loops therein which project upon a side of said fabric, substantially parallel bars extending in substantially parallel relation to the front side of a loom structure, bars for supporting the said needles, one of the said bars being slidably mounted upon one of the said parallel bars and the other of said bars being mounted upon the other of said parallel bars and both of the said needle supporting bars extending in substantially right angular relation to the said parallel bars,

one of said needle supporting bars being located in adjoining relation to one edge said fabric and the otherin adjoining relation to the opposite edge of said fabric means for effecting independent simultaneous longitudinal movements of the said parallel bars in the same direction transversely of the length of the fabric'being woven, an impact bar, and means for causing movements of said impact bar to contact with the said needle supporting bars for causing alternate longitudinal movements "of said needle supporting bars.

7. An attachment for a loom to form pile projections upon a surface, of a' fabric, comprising needles which are adapted to cooperate with selected warp threads in the weaving of a fabric to form loops therein, means to which the said needles are secured and by which they are supported, separate means for slidably supporting the said needle supporting means, a driving shaft, a shaft which is driven by the said driving shaft, means interposed between the said second named shaft and the said separate means for alternately actuating the latter to impart reciprocatory movements to the said needles longitudinally thereof, and an impact bar actuated by said driving shaft and operable when in predetermined positions to move said needle supporting means alternately in a direction transverse to said needles.

8. An attachment for a loom to form pile projections upon a surface of a fabric, comprising needles which are adapted to cooperate with selected warp threads employed in the weaving of a narrow ware fabric, supports for the said needles, a driving shaft, a shaft angularly related to the said driving shaft and driven thereby, cam disks mounted upon the said second named shaft, the said disks being provided with cam grooves, levers pivoted intermediate their ends, one end of each of which is in engagement with a cam groove in one of'the said cam disks, connections between the opposite ends of said levers and the said needlesupporting means whereby actuation of said levers imparts longitudinal rec-iprocatory movements to the said needles, and an impact bar actuated'by' said driving shaft'and operable when in predetermined positions to move said needle supports alternately in lines transverse to said needles.

9. An attachment for a loom to form pile projections upon a surface of a fabric, comprising needles which are adapted to cooperate with selected warp threads employed in the weaving of a fabric to form loops therein upon one side of the said fabric, separate means for separately supporting the said needles, a driving shaft, a shaft supported in angular relation to the said driving shaft and adapted to be actuated thereby, disks mounted upon the said second named shaft f and adapted to be rotated therewith, the said disks being provided with cam grooves .of predetermined shape, levers -pivoted*mtermediate their ends, one end of the respective levers being in engagement with the respective cam; grooves, link connections between the other ends of said levers and the separate needle supporting means whereby pivotal movements of the said levers are adapted to impart reciprocatory movements to the said needles, and means interposed between the said driving shaft and the said needle supporting means for imparting to the needles movements laterally of their lengths.

10. An attachment for a loom to form pile projections upon a surface of a fabric, com prising needles which are adapted to cooperate with selected warp threads employed in the weaving of a narrow ware fabric to formloops in said threads which project from-a side ofthe said fabric, separate suporting means for the said levers, a driving shaft, a shaft supported in angular relation to the saiddriving shaft and adapted to berotatably driven thereby, the said second named shaft being provided' with disks which rotate therewith, which disks are provided j with cam grooves of irregularshape, levers pivotally supported intermediate their ends,

one endof one of the said levers being in engagement with a cam groove 1none of said disks and one end of the other of said,

levers being in engagement withv the cam groove of the other of said disks, connections between the opposite ends ofsai-d leversand the said needle supporting means whereby pivotalmovements of the-said leversimpart Y reciprocatory movements tothe said needles, means supported in operative relation to-the needle supports, and means interposed between the said driving shaft and the said last named means for actuating the latter to cause movements of the said needles laterally with respect to their lengths.

11. An attachment for a loom to formpile projections upon a surface of 'a fabric, comprising needles which are adapted to cooperate with selected warp threads employed in" the weaving of a narrow ware fabric to form 1 loops therein-which project from one surface of the said fabric, bars for supporting the said'needles, which bars extend in directions parallel with the length of the warp threads and are locatedupon the opposite sides thereof, bars for supporting the said needle supporting bars, the'latter extending crosswise of the bars by which they are supported and the outer ends' of which project beyond the said'second named bars, a driv ing shaft, a shaft supported in angular relation to the said driving shaft andv adapted to be driven thereby, means interposed be-- tween the second named shaft and the second named bars for actuating the latterto cause reciprocatory movements thereof, an impact bar having means thereon for contact-ingwith the outer ends of the said first named bars, a pivotally mounted arm connections between the said arm and the driving shaft for causing swinging oscillatory movements of said arm, a connecting rod pivotally connected atone end to the outer end of said arm, a plurality of shafts having arms mounted thereon, the outer ends of which are connected to the said connecting red, the upper ends of said shafts being provided with arms, and means for connecting the outer ends of said arms to the said impact bar whereby oscillatory movements of the said last named shafts cause lateral swinging movements of the said impact bar to effect longitudinal movements of the first named bars.

12. An attachment for a loom to form pile projections upon the surface of a fabric, comprising needles, separate and independently movable bars for supporting said needles, a bar having means thereon for alternately contacting with said movable needle supporting bars when the latter occupy p edetermined positions for moving the same rear wardly, a driving shaft, means interposed between said driving shaft and the said second named bar for causing oscillatory movements of the latter toward and from the front of the loom to effect alternate rearward movements of the said needle supporting bars, separate and independently movable bars for supporting the said needle supporting bars, a means interposed between said driving shaft and the said'separate and independently movable bars for causing reciprocatory movements of the latter to thereby cause alternate lateral movements of the said needle supporting bars to move the said needles into and out of operative relation to the Warp threads of the fabric being woven.

In. testimony that I claim the foregoing as my invention I have hereunto signed my name this 27th day of March, 1928.

FRANKLIN /V. OEHRLE. 

